连击数串由不同数量的采摘获取和显示一个TextView
问题描述:
I have a text view, by clicking TextView I have a dialog with 3 NumberPickers. I want to concatenate values to string which will looks like '99 9 99' or '99999'[selected integers from NumberPickers] from all 3 different NumberPickers shown in dialog, and set the string to the textView.连击数串由不同数量的采摘获取和显示一个TextView
public void pricePTola() {
//int price;
//TextView;
//double RPT;
NumberPicker np1, np2, np3;
final int npThousand, npHundrd, npTen;
//final String[] price = new String[1];
String price;
TextView textView = (TextView)findViewById(R.id.RPT);
Dialog dialog = new Dialog(HomeActivity.this);
dialog.requestWindowFeature(Window.FEATURE_LEFT_ICON);
dialog.setContentView(R.layout.number_picker);
dialog.setTitle("RATE PER TOLA");
//dialog.set
//String strPrice = String.valueOf(price);
//TextView RPT=(TextView)findViewById(R.id.RPT);
np1=(NumberPicker)dialog.findViewById(R.id.np1);
np1.setMaxValue(99);
np1.setMinValue(00);
np1.setWrapSelectorWheel(true);
npThousand=np1.getValue();
//npThousand=np1.toString();
np2=(NumberPicker)dialog.findViewById(R.id.np2);
np2.setMaxValue(9);
np2.setMinValue(0);
np1.setWrapSelectorWheel(true);
npHundrd=np2.getValue();
//npHundrd=np2.toString();
np3=(NumberPicker)dialog.findViewById(R.id.np3);
np3.setMaxValue(99);
np3.setMinValue(00);
np1.setWrapSelectorWheel(true);
npTen=np3.getValue();
np3.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
picker.setValue((newVal < oldVal)?oldVal-5:oldVal+5);
/*price[0] = npThousand + "" + npHundrd + "" + npTen;
TextView RPT = (TextView) findViewById(R.id.RPT);
RPT.setText(price[0]);*/
}
});
/*np2.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
picker.setValue((newVal < oldVal)?oldVal-5:oldVal+5);
price[0] = npThousand + "" + npHundrd + "" + npTen;
TextView RPT = (TextView) findViewById(R.id.RPT);
RPT.setText(price[0]);
}
});
np1.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
picker.setValue((newVal < oldVal)?oldVal-5:oldVal+5);
price[0] = npThousand + "" + npHundrd + "" + npTen;
TextView RPT = (TextView) findViewById(R.id.RPT);
RPT.setText(price[0]);
}
});
dialog.show();
//price = valueOf(valueOf(np1) + valueOf(np2) + valueOf(np3));
price = npThousand+""+ npHundrd+""+npTen;
TextView RPT=(TextView)findViewById(R.id.RPT);
RPT.setText(price);
}
他们MainActivity.Java
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
final TextView TV1=(TextView)findViewById(RPT);
TV1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
pricePTola();
}
});
答
1 - 我看到了你应该函数pricePTola返回字符串你不应该在其上声明TextView。
2 - 在函数pricePTola上的每个onvalueChange函数中,您必须将npThousand = np1.getValue();对于np1,对于其他两个采购员也是这样做的。
3-功能String result = String.valueOf(npThousand)+String.valueOf(npHundrd)+String.valueOf(npTen); return result;
结束
4 - 终于在OnCreate
TV1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String final = pricePTola();
TV1.setText(final);
}
});
我希望这有助于
我做 我做np1.setOnValueChangedListener(新NumberPicker.OnValueChangeListener(){ @Override public void onValueChange(NumberPicker numberPicker,int i,int i1){ final int npHundrd = np2.getValue(); } }); –
我正在做2种方法。第一是这样的: np1.setOnValueChangedListener(新NumberPicker.OnValueChangeListener(){ @Override 公共无效onValueChange(NumberPicker numberPicker,INT I,INT I1){ 最终诠释npHundrd = np2.getValue();} } ) ;但在这里当我做'字符串结果= String.valueOf(valueOf(npThousand)+ valueOf(npHundrd)+ valueOf(npTen)); 'npThousand/Hundrd/Ten在这里没有工作。那么如果我尝试'int npTen = np3.getValue(); '在'OnValueChangedListene'之外放置它会在TextView中显示一些垃圾值。 –
它继续在文本视图中扔垃圾值。它显示文本中的值当对话框打开时显示视图,意味着文本视图在对话框打开时获取值时不会在对话框关闭或numberPicker值更改时获取/获取值。 –